ST ST19NP18-TPM User Manual

Data brief

For further information contact your local STMicroelectronics sales office.

September 2011 Doc ID 022252 Rev 1 1/8

8

ST19NP18-TPM

Trusted Platform Module (TPM)

Features

■ Single-chip Trusted Platform Module (TPM)

■ Embedded TPM 1.2 firmware

■ 33-MHz Low Pin Count (LPC) interface V1.1

■ Compliant with TCG PC client specific TPM

Implementation Specification (TIS) V1.2

■ Dedicated LPC communication buffer for TPM

commands handling optimization

■ Compliant with Trusted Computing Group

(TCG)

(a)

V1.2 specifications

■ Architecture based on ST19N Secure

Smartcard IC platform:

– 1088-bit Modular Arithmetic Processor

providing full support for Asymmetric

operations

– Hardware-based SHA-1 accelerator

enabling BIOS related fast hash operations

– AIS-31 compliant True Random Number

Generator

– Active security sensors

■ EEPROM-based NVM including 128 Bytes of

OTP area for production configuration

– Highly reliable CMOS EEPROM submicron

technology

– 10 year data retention

– 500,000 Erase/Write cycle endurance

– Storage for up to 9 keys depending on

firmware patch size

■ 5 firmware-controlled general-purpose I/O

(GPIO) pins

■ Available in recommended TCG PC client 1.2

compatible TSSOP28 ECOPACK® package

(RoHS compliant)

■ 3.3V ± 10% power supply voltage

■ 0 to 70

o

C operating temperature range

■ ST19NP18 intrinsic cryptographic

performances

(b)

– RSA 1024-bit signature with CRT

(c)

:57 ms

– RSA 1024-bit signature without CRT

(c)

: 189 ms

– RSA 1024-bit verification (e=’$10001’): 3.7 ms

– RSA 1024-bit key generation: 1.6 s

– RSA 2048-bit signature with CRT

(c)

: 382 ms

– RSA 2048-bit verification (e=’$10001’): 60 ms

a. TCG website: www.trustedcomputinggroup.org

b. Typical values, independent of external clock

frequency and supply voltage.

c. CRT: Chinese Remainder Theorem.

TSSOP28

www.st.com

Description ST19NP18-TPM

2/8 Doc ID 022252 Rev 1

1 Description

The ST19NP18-TPM is a cost-effective Trusted Platform Module (TPM) solution. The

ST19NP18-TPM is designed to provide PC platforms with enhanced security and integrity

mechanisms as defined by Trusted Computing Group standards. The product provides full

support of TCG v1.2 specifications.

The ST19NP18-TPM is based on the ST19NP18 silicon product.

The ST19NP18 is driven from the Smartcard IC ST19N platform. It is manufactured using

the advanced highly reliable STMicroelectronics CMOS EEPROM technology.

The ST19NP18 has an 8-bit CPU architecture and includes the following on-chip memories:

User ROM, User RAM and EEPROM with state of the art security features. ROM, RAM and

EEPROM memories can be configured into partitions with customized access rules.

The ST19NP18 also includes a Modular Arithmetic Processor (MAP). The 1088-bit

architecture of this cryptographic engine allows processing of modular multiplication,

squaring and additional calculations up to 2176 bit operands.

The Modular Arithmetic Processor (MAP) is designed to speed up cryptographic

calculations using Public Key Algorithms.

The Secure Hash Accelerator allows fast SHA-1 computation especially well suited for BIOS

hash operations during early boot stages.

The ST19NP18 is specially designed in line with TCG PC Client Specific TPM

Implementation Specification (TIS) referring to Intel®’s LPC Specification revision 1.1.

Figure 1. ST19NP18-TPM block diagram

Internal Bus

Memory Access Firewall

Gnd

8-bit

CPU

3 x

8-bit

Timers

CRC

module

LCLK

Clock

Generator

module

ST ROM, MAP and EDES Firewall

RAM User ROM

ST ROM and

Crypto

Libraries

EDES

Accelerator

MAP

1088 bits

537

Vps

TRNG A

&

TRNG B

Security

Admin.

LRESET

EEPROM

SHA

Module

5 x

GPIO

Interface

Gpi02

RAM 2K

LPC

Interface

LFrame

LPCPD

Lad3

Lad2

Lad1

Lad0

PP SERIRQ

Gpi03

Gpi04

Gpi05

Gpi01

I/O

ST19NP18-TPM Description

Doc ID 022252 Rev 1 3/8

In order to meet environmental requirements, ST offers these devices in different grades of

ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®

specifications, grade definitions and product status are available at: www.st.com.

ST19NP18-TPM is provided in a TSSOP28 package compliant with ECOPACK® Level 3

specifications which guarantees RoHS compliancy and that products are both lead- and

halogen-free.

ECOPACK® is an ST trademark.

Embedded TCG TPM firmware

The ST19NP18 includes TPM firmware compatible with TPM V1.2 specifications.

This firmware supports features such as Cryptographic Key Generation, Integrity Metrics

and Secure Storage, as well as Locality, Delegation and Transport Session functions.

This TCG TPM firmware uses an optimized and flexible software architecture that easily

integrates Trusted Computing Framework enhancements or dedicated functions.

The ST19NP18-TPM provides OEMs with a TPM solution for their PC platforms.

Figure 2. ST19NP18-TPM overview

625

Application 1 Application 3Application 2

MS CAPI

CSP

PKCS# 11

CSP

Cryptographic

Infrastructure Interface

TSP Interface

OS User

Mode

TSS Service Provider - TSP

TSS Core Services - TCS

TPM Device Driver Library - TDDL

TCS Interface

TDDL Interface

TPM Device Driver - TDD

OS Kernel

Mode

ST19NP18 + Embedded TPM Firmware

Hardware

& Firmware

Memory

Absent

Driver - MAD

Subsystems included in the ST19NP18-TPM solution

TPM BIOS

Drivers

Memory

Present

Driver - MPD